range-gated detection

例句：

1. 1. Therange-gated detection system helps to detect the presence of a target object within a certain range.
   这个范围门控检测系统可以帮助检测目标物体在一定范围内的存在。
2. 2.The range-gated detection system is used in many applications, such as security and surveillance.
   范围门控检测系统在许多应用中被使用，例如安全和监控。
3. 3.The range-gated detection system can be used to detect small objects or people that are too far away to be seen with the naked eye.
   范围门控检测系统可以用于检测肉眼无法看到的小型物体或人。